Lcd Display Alarm Information And Troubleshooting - Sungrow SG500MX Operation Manual

Operation Manual
Fault Fan-flt
Inverter internal fan fault
Possible
reason
Check the functionality of fan after the device is voltage-free
Measure
Remark Contact Sungrow
DC SPD flt
Fault
Possible DC SPD tripping, over-voltage protection
reason
Measure Replace the SPD with the same model after the device is voltage-free
Contact Sungrow
Remark
Fault AC SPD flt
AC SPD tripping, over-voltage protection
Possible
reason
Measure Replace the SPD with the same model after the device is voltage-free
Remark Contact Sungrow
Mism-ac
Fault
Possible Sensor is damaged
reason
Replace the sensor with the same model after the device is voltage-free
Measure
Contact Sungrow
Remark
Island
Fault
Islanding detected
Possible
reason
Measure Inverter enters into anti-islanding protection state automatically
Inverter automatically reconnects to the grid once the grid becomes normal
Remark
Fault Ctrol power supply-flt
CPS (Control power supply) inside the inverter cannot work normally
Possible
reason
-
Measure
Remark Inverter automatically reconnects to the grid once the CPS reverts to normal and the
grid-connection requirements are fulfilled
Ctrol cabt. Temp-flt
Fault
Possible Inverter control cabinet fans fault
reason
Measure Check and maintain the control cabinet fan when device is voltage-free
Contact Sungrow
Remark
10.4

LCD Display Alarm Information and Troubleshooting

During warn running state, inverter can operate normally and send warn signal. User can check
the warn information through the Work state on the default menu or through the
Function->History-information->His-alarm interface to check the latest 100 history alarm
information. Inverter will recover normal operation once the alarm is removed.
10 Troubleshooting
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